21745548

素因数分解:

$2^2\times 3^2\times {\mathrm{11}}^1\times {\mathrm{89}}^1\times {\mathrm{617}}^1$

素因数の和:727

約数の個数: 72

約数和(自身を含む): 60737040

約数和(自身を除く): 38991492

約数列:

[1, 2, 3, 4, 6, 9, 11, 12, 18, 22, 33, 36, 44, 66, 89, 99, 132, 178, 198, 267, 356, 396, 534, 617, 801, 979, 1068, 1234, 1602, 1851, 1958, 2468, 2937, 3204, 3702, 3916, 5553, 5874, 6787, 7404, 8811, 11106, 11748, 13574, 17622, 20361, 22212, 27148, 35244, 40722, 54913, 61083, 81444, 109826, 122166, 164739, 219652, 244332, 329478, 494217, 604043, 658956, 988434, 1208086, 1812129, 1976868, 2416172, 3624258, 5436387, 7248516, 10872774, 21745548]

約数ペア:

[(1, 21745548), (2, 10872774), (3, 7248516), (4, 5436387), (6, 3624258), (9, 2416172), (11, 1976868), (12, 1812129), (18, 1208086), (22, 988434), (33, 658956), (36, 604043), (44, 494217), (66, 329478), (89, 244332), (99, 219652), (132, 164739), (178, 122166), (198, 109826), (267, 81444), (356, 61083), (396, 54913), (534, 40722), (617, 35244), (801, 27148), (979, 22212), (1068, 20361), (1234, 17622), (1602, 13574), (1851, 11748), (1958, 11106), (2468, 8811), (2937, 7404), (3204, 6787), (3702, 5874), (3916, 5553)]